Chapter 4

What are the most important differences between perfectly competitive markets and monopolistically competitive markets? Give two examples of products sold in perfectly competitive markets and two examples of products sold in monopolistically competitive markets.

From the following graph, show the equilibriums under each scenario.   Market is in equilibrium at A under competitive market. (a) Show the equilibrium under monopoly. Call this point B (b) When the demand increased in the area due to immigration, show the new competitive equilibrium, call this point C. (c) Show the new monopolistic equilibrium with increased demand and call this point D.

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Economics

2. Entry or exit in the long run Fantastique Bikes is a company that manufactures bikes in a monopolistically competitive market. The following graph shows Fantastique's demand curve, marginal revenue curve (MR), marginal cost curve (MC), and average total cost curve (ATC). Place the black point (plus symbol) on the graph to indicate the short-run profit-maximizing price and quantity for this monopolistically competitive company. Then, use the green rectangle (triangle symbols) to shade the area representing the company's profit or loss. 500 450 Monopolistically Competitive Outcome 400 350 300 Profit or Loss A ATC 250 200 150 MC 100 50 MR Demand 50 100 150 200 250 300 350 400 450 500 QUANTITY (Bikes) Given the profit-maximizing choice of output and price, the shop is earning profit, which means there are shops in the industry than in long-run equilibrium. PRICE (Dollars per bike)

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4. Is monopolistic competition efficient? Suppose that a company operates in the monopolistically competitive market for rugby kits. The following graph shows the demand curve, marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve for the firm. Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost. ? PRICE (Dollars per kit) 100 90 80 70 60 50 40 30 20 10 0 0 MC 10 True ATC False MR 20 30 40 50 60 70 QUANTITY (Thousands of kits) 80 Demand 90 100 Mon Comp Outcome Because this market is monopolistically competitive, you can tell that it is in long-run equilibrium by the fact that for each firm. Further, a monopolistically competitive firm's average total cost in long-run equilibrium is cost. Min Unit Cost True or False: This…

4. Is monopolistic competition efficient? Suppose that a company operates in the monopolistically competitive market for rugby kits. The following graph shows the demand curve, marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve for the firm. Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost. (?) PRICE (Dollars per kit) 100 90 80 70 60 50 40 30 20 10 0 MC 0 10 20 ATC MR Demand 30 40 50 60 70 QUANTITY (Thousands of kits) 80 90 100 + Mon Comp Outcome Min Unit Cost

4. Is monopolistic competition efficient? Suppose that a company operates in the monopolistically competitive market for rugby kits. The following graph shows the demand curve, marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve for the firm. Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost. → Show Transcribed Text 100 90 80 70 8 PRICE (Dollars per kit) 50 40 30 20 10 0 0 MC 10 ATC 3 c MR 20 30 40 50 60 70 80 QUANTITY (Thousands of kits) Demand 90 100 Mon Comp Outcome Min Unit Cost

8. From the following graph, show the equilibriums under each scenario. Market is in equilibrium at A under competitive market. (a) Show the equilibrium under monopoly. Call this point B (b) When the demand increased in the area due to immigration, show the new competitive equilibrium, call this point C. (c) Show the new monopolistic equilibrium with increased demand and call this point D. P'. P MR D. MR, Q. Q', Quantity Price

3. Discuss the long debate of economists whether there is a significant loss of well-being to society in markets that are monopolistically competitive rather than perfectly competitive

7. The figure shows the monopolistically competitive market for smartphones. Plot the profit-maximizing price and quantity on the graph. Is this producer earning positive or negative profits in the short run? In the long run, will supply or demand for this producer's good be affected? Will economic profits increase or decrease for this producer?

3. Is monopolistic competition efficient? Suppose that a firm produces wooden train engines in a monopolistically competitive market. The following graph shows its demand curve, marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve. Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost. PRICE (Dollars per engine) 100 90 80 70 60 50 40 30 20 10 0 0 MC ATC MR Demand 10 20 30 40 50 60 70 80 90 100 QUANTITY (Thousands of engines) + Mon Comp Outcome Min Unit Cost Because this market is a monopolistically competitive market, you can tell that it is in long-run equilibrium by the fact that optimal quantity for each firm. Furthermore, a monopolistically competitive firm's average total cost in long-run equilibrium is minimum…

3. Is monopolistic competition efficient? Suppose that a firm produces wooden train engines in a monopolistically competitive market. The following graph shows its demand curve, marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve. Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost. (?) PRICE (Dollars per engine) 100 90 80 70 60 50 40 30 20 10 0 0 MC T ATC MR Demand 10 20 30 40 50 60 70 80 90 100 QUANTITY (Thousands of engines) Mon Comp Outcome Min Unit Cost Please help me graph the monopolistic competition outcome and the minimum unit cost.

4. Is monopolistic competition efficient? Suppose that a firm produces polo shirts in a monopolistically competitive market. The following graph shows its demand curve, marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve. Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Next, place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost. (? 100 90 Mon Comp Outcome 80 70 60 Min Unit Cost 50 ATC 40 30 20 10 MC MR Demand 10 20 30 40 50 60 70 80 90 100 QUANTITY (Thousands of shirts) PRICE (Dollars per shirt)

Because this market is monopolistically competitive, you can tell that it is in long-run equilibrium by the fact that at the optimal quantity for each firm. Further, the quantity the firm produces in long-run equilibrium is the efficient scale. True or False: This indicates that there is excess capacity in the market for jackets. O True False Monopolistically competitive markets may be socially inefficient due to the presence of too many or too few firms. The presence of the externality implies that there is too much entry of new firms in the market.

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K Suppose the figure to the right represents the market for a particular brand of shampoo, such as L'Oreal, Lancome, or Maybelline. Assume the market is monopolistically competitive. What is the firm's profit-maximizing price and quantity? thousand per bottle. (Enter your The monopolistically competitive firm's profit-maximizing quantity is bottles of shampoo, and its profit-maximizing price is $ responses as integers.) Price and cost (per bottle) ♫ 3.00- MC 2.80- ATC 2.60- 2.40- 2.20- 2.00- 1.80- 1.60- 1.40- 1.20- 1.00- 0.80- 0.60- 0.40- 0.20- 0.00+ 0 MR 2 4 6 8 10 12 14 16 18 20 22 24 Quantity (shampoo bottles in thousands)

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